It's mining bitcoin's algo on BTCguild, so it can only mine SHA-256, so therefor no altcoin such as litecoin mining... Not to mention that Antminer U3 will do the same thing speed wise and it's a known product, I haven't heard of this machine. It won't make back ROI any time soon, it's too slow (~60GH/s) to make much money these days, pretty much only a few cents a day.

TL;DR Too slow to make money back, not well known product, wouldn't buy it personally.